HP EliteBook 840/845 G8–G10 Key Repair: Replace One Key or the Keyboard?
A broken key on an HP EliteBook 840 or 845 does not automatically mean a keyboard replacement. When the damage is limited to one physical key — a missing cap, a cracked retainer clip, or a key that no longer springs back — a model-matched single-key repair kit is usually the direct fix, and it costs a fraction of a keyboard assembly swap.
The catch is that "EliteBook 840" describes at least three recent generations, and the 845 looks nearly identical to all of them. The cap that fits an 840 G8 is not guaranteed to fit a G10, so the first job is confirming exactly which machine is on your desk. This guide shows how to do that, how to decide between a one-key repair and a full keyboard, and how to pick the correct part.
840 vs. 845: what the model numbers mean
Within each generation, the EliteBook 840 and 845 are sibling 14-inch business laptops: the 840 uses Intel processors and the 845 uses AMD Ryzen processors. They share the same chassis design and look the same from the keyboard side.
Looking the same is not the same as being the same. Keyboards vary between generations and between configurations of the same generation — backlit versus non-backlit, and regional layout differences. Always select the exact model and generation in the catalog rather than assuming any 14-inch EliteBook key will fit.
Confirm your generation before ordering
The generation suffix — G8, G9, or G10 — is the part people most often skip, and it matters more than anything else on the label. Three quick ways to find it:
- Press Fn + Esc. On HP business laptops this opens HP System Information, which lists the full product name, such as "HP EliteBook 840 G9."
- Check the service label. The regulatory label on the bottom cover lists the product name and product number.
- Check Windows. Type msinfo32 into the Start menu and read the System Model line.
| Model | Generation | Processor family |
|---|---|---|
| EliteBook 840 G8 replacement keys | G8 (2021) | Intel |
| EliteBook 845 G8 replacement keys | G8 (2021) | AMD Ryzen |
| EliteBook 840 G9 replacement keys | G9 (2022) | Intel |
| EliteBook 845 G9 replacement keys | G9 (2022) | AMD Ryzen |
| EliteBook 840 G10 replacement keys | G10 (2023) | Intel |
| EliteBook 845 G10 replacement keys | G10 (2023) | AMD Ryzen |
If the label is worn or the laptop will not power on, our HP model identification guide covers every place HP prints the model information. Once you know the generation, open the matching catalog page above and compare your keyboard against the keyboard image before selecting the key.
Backlit or not? Check before you order
All three generations were sold with and without keyboard backlighting, often within the same office. A backlit keyboard uses translucent key legends so the light shows through; a non-backlit cap on a backlit keyboard blocks its own legend and looks visibly darker than its neighbors.
The quick test: in a dim room, press the backlight key (the function-row key with the backlight symbol). If nothing lights up on any setting, the keyboard is non-backlit. Choose the kit that matches, and see our backlit key replacement guide for how the translucent legends and lighting behave during a repair.
Replace one key or the whole keyboard?
This is the real decision, and the symptom answers it.
One key is the right repair when:
- The key cap is missing, cracked, or worn smooth while the rest of the keyboard types normally.
- The cap sits crooked, rocks, or pops off repeatedly — usually a cracked cap hook or retainer clip.
- One key feels mushy or does not spring back — typically a torn or dislodged rubber cup.
- A key registers only when pressed hard in one corner, and the cap or clip shows visible damage.
A single-key kit includes the cap, the retainer clip, and the rubber cup for that specific key, so one order covers whichever of the three pieces actually failed.
The full keyboard needs service when:
- Several unrelated keys fail at the same time, or an entire row stops registering.
- Keys travel and click normally but never type, even after ruling out software causes and testing outside Windows.
- Liquid reached the keyboard and symptoms are spreading or changing day to day.
- The tiny metal mounting hooks were torn out of the keyboard base plate.
On the EliteBook 840 and 845, a keyboard assembly replacement means opening the chassis, so for one physically damaged key it is almost never the proportionate fix. Repair the part that failed.
Inspect the key well before buying
Power the laptop off and look at the damaged position under good light:
- The cap underside: every small plastic hook should be intact, with no white stress marks.
- The retainer clip: the scissor mechanism should lie flat, pivot freely, and stay seated in its metal mounts.
- The rubber cup: the silicone dome should be centered and untorn.
- The base mounts: the metal hooks in the keyboard plate must be present and straight. A missing base hook is the one failure a key kit cannot repair.
Installing the replacement key
The repair itself takes a few minutes. Remove any broken pieces, seat the rubber cup in the center of the well, install the retainer clip into its metal mounts first and confirm it moves freely, then align the cap squarely and press until each corner clicks. Follow the model-specific steps in our installation instructions before applying any force — the clip orientation matters, and forcing a misaligned cap is the most common way a simple repair turns into a second broken part.
Wide keys such as the space bar and Shift may include a metal stabilizer bar. Photograph its orientation before removing anything, and reuse the existing bar when the instructions call for it.
Find your EliteBook replacement key
Confirm the generation with Fn + Esc, pick your exact model, and select the key you need from the keyboard image.
Browse HP EliteBook keys →Frequently asked questions
Are EliteBook 840 and 845 keys interchangeable?
They are siblings within a generation, but do not order by assumption. Select your exact model — 840 or 845, G8, G9, or G10 — in the catalog and compare the keyboard image, so the cap, clip, and legend all match what is actually on your machine.
Will a G8 key fit my 840 G10?
Not reliably. Generations can change the retainer clip design and cap profile even when the keyboards look alike in photos. Order from the catalog page for your specific generation.
How do I know if my EliteBook keyboard is backlit?
Press the backlight key on the function row in a dim room. If the keys never light up, order non-backlit caps; if they do, order backlit caps so the legend stays translucent and matches its neighbors.
One key stopped working after a drop. Key kit or keyboard?
Inspect the key well first. If the cap, clip, or rubber cup shows damage and the surrounding keys type normally, a single-key kit is the fix. If the metal mounts tore out of the base plate or several keys failed, the keyboard needs deeper service.